The benchmark TOCOM rubber contract for January delivery finished 6.8 yen, or 4.0%, lower at 168.5 yen ($1.58) per kg, after touching the lowest since Dec. 26, 2018 of 166.9 yen earlier in the session.

For the week, it booked an 8.1% slide, marking a second consecutive weekly loss.

The most-active rubber contract on the Shanghai futures exchange for September delivery slumped 300 yuan to finish at 10,340 yuan ($1,490) per tonne, the lowest close in about one year.

Rubber inventories in warehouses monitored by the Shanghai Futures Exchange rose 1.7% from last Friday, the exchange said on Friday.